Floor-sanding machine



June 30, 1925. 1,544,400

A T. G; HOLT FLOOR SANDING MACHINE Filed June 24, 1924 2 Sheets-Sheet 1June 30, 1925. T. G. HOLT FLOOR SANDING MACHINE Filed June 24, 1924 2Sheets-Sheet Patented June 30, 1925.

UNITED STATES THOMAS G. HOLT, or KANSAS c ITY," MISSOURI.

FLOOR-SANDING MACHINE.

Application filed June 24,

To all whom it may concern:

Be it known that I, THOMAS G. HOLT, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Floor-SandingMachines, of which the following is a specification, reference being hadto the accompanying drawings.

This invention relates to improvements in floor sanding machines andmore particularly to a device for sanding the edges of the floors nextto the base board;

In the ordinary construction of floor sand-; ing devices such asemployed for polishing hardwood floors and the like, the constructionthereof is such that itis impossible to sandpaper the floor by the useof the device at that part of the floor lying next to the base molding,the structure of the roller and the location thereof in the machinepreventing it being moved nearer to the base molding than about fourinches. This space must accordingly be hand scraped or sanded, causingthe operation to be very expensive and in cases where scraping isresorted to, the band of flooring about the edge of the room whencompleted is of a different color from the central portion.

An important object of this invention accordingly becomes to provide adevice wh ch may be employed for sanding this remaining strip offlooring sufficiently close to the base molding so that any remainingwill be covered by the usual ogee strip placed at the bottom of the basemolding.

A further object of the invention is to provide a device of thischaracter which is readily reversible so that it may be employed forsanding either the right orleft hand corners of a room.

A still further object of the invention is to provide a device of thischaracter which is simple in its construction and arrangement, readilyadjustable, durable in service and a general improvement in the art.

These and other objects I attain by the construction and arrangementshown in the accompanying drawings wherein for the purpose ofillustration is shown a preferred embodiment of my invention and whereinlike reference characters designate like parts throughout.

In the drawings Figure 1 is a side elevation of a floor sanding machineconstructed in accordance 1924. Serial 1701722412.

with my invention showing the machinedurin'gthe' operation of shiftingthe sanding wheel ,or roll from one side of the machine to the other,the final position of the'vmar.

chine being shown in dotted lines;

Figure 2 is a side elevation of the opposite 7 motor is journaled, aresmounted bushings 14, the hub portions of the housing being preferablyturned down to a uniform diameter. for the reception of these bushings.

The'peripheriesof the bushings 14: have formedwtherein' grooves 15 whichreceive,

tongues, 16 formed upon the coacting faces of bearings 17 formed uponthe inner ends of connecting rods 18. The connecting rods 18 areadjustable as to length, as by means of bolt and slot engagement, suchas indicated at 19, and are provided at their forward ends with bearings20 which bearings are connected by a housing 21. A shaft 22 is rotatablymounted in these bearings and extends therethrough and through thehousing 21, the ends of the shaft projecting beyond the housing and oneend of the shaft being connected with the shaft 13 of the motor bysprocket and chain or similar engagement, as indicated at 23. Thebearings 20 and 1.7 of the connecting rods may be lubricated in anydesired manner, the former being preferably provided with hard greasecups indicated at 24, and the latter having formed therein oil holes 25by means of which oil may be introduced to the grooves 15.

Mounted upon a bushing 26 carried by one end of the shaft 22 is a paddedwheel 27, and upon the opposite end of the shaft 22 is secured forrotation with the shaft, a sanding wheel 28 having any suitable means,as at 29, whereby the sandpaper may be secured thereto. Secured to theforward end of the adjacent connecting rod 18 is a strap iron frame orguard 30 surrounding the sanding roller and maintaining the same at alltimes in spaced relation to the base board 2 enough to the base hoardleave only a strip unsanded which may be covered by l the ogee moldingabove mentioned. An op crating handle 31" is provided secured at itslower end, as by mean's'of straps '32, to the likewise be obvious thatthe construction of housing 21 and having at its P9 11 end cross bar tobe engaged by the hands -of the operator. Adjacent this cross barvthe operating handle is provided with a switch'33 controlling "the motor.-

erator having started the motor, moves the 7 'machine with the sanding:roller and guard dium of the handle -31, the free ends offthe connectingrods 18, these rods rotating about I the bushings carried by the hubportions of the motor housing and permittin the entire machine to'befreversed. With t e machine so reversed, it will be obvious that theleft hand corner may besanded by the use of the roller with the samefacilitythat is met with in sanding the right hand corner.

g --It will be obvious thatby the use of a II1&-'

In the use of my device in sanding, the op chinezof this constructionthe necessity for scraping the unsanded' edges is eliminated as ivenoperation is accordingly lessened and a 'etter' finish appliedfto thefloor.' It will the machine being very simple, the device will bedurableinservice and capable of continued use withoutthe necessity ofreplacing delicate parts. I accordingly do .not lim-itmyselfto thespecific structure hereinbefore set forth' lekcept as hereinafterclaimed/ I claim: 1 In afloor'. sanding device, a wheel sup ported:motor embodying the usual housing and shaft, connecting rods pivotallyensgagedwith themotor housing at opposite f a 50 sides thereof and"rotatable upon the housing with the shaft as a center, a shaftrotatably .and thatthe amount ofwork accompanying I mounted'in the freeends of' sai'd connecting rods, a sprocket and chain connection betweentheiemotor'shaft andthelast named shaftfsaid connecting rods beingadjustable as -to length,an operating handlerotatably engaged with thelast named shaft, and a I,

sanding wheel carri d by opn'-pndg f the last i named shaft.

In testimony whereof hereunto aflix my. j

' i TH MAS -L L signature.

GoL

